Automatically resolve pylock if check fails (vllm-project#299)

## Summary

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Include a short paragraph of the changes introduced in this PR.
If this PR requires additional context or rationale, explain why
the changes are necessary.
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Currently if the package requirements change in `pyproject.toml` the
pylock pre-commit hook will fail and require the user to manually apply
a pylock update. This change automates the pylock update so the user
should only need to add and commit the updated pylock.

## Details

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- Update pylock pre-commit hook to attempt to update the pylock file
when `pdm lock --check` fails.

## Test Plan

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List the steps needed to test this PR.
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1. Adjust package dependencies in `pyproject.toml`
2. Run `pdm run pre-commit run pdm-lock-check --all-files` and validate
that the pylock changed
4. Run `pdm run pre-commit run pdm-lock-check --all-files` and validate
that the check passes

---

- [x] "I certify that all code in this PR is my own, except as noted
below."

## Use of AI

- [ ] Includes AI-assisted code completion
- [ ] Includes code generated by an AI application
- [ ] Includes AI-generated tests (NOTE: AI written tests should have a
docstring that includes `## WRITTEN BY AI ##`)

Signed-off-by: Samuel Monson <[email protected]>

Author: sjmonson

.pre-commit-config.yaml

@@ -11,6 +11,7 @@ repos:
   hooks:
     - id: pdm-lock-check
       name: check lock file matches pyproject
+      entry: sh -c "pdm lock -v --check || pdm lock --update-reuse"
 - repo: https://github.com/astral-sh/ruff-pre-commit
   rev: v0.11.7
   hooks: